sad

American Heritage® Dictionary of the English Language, Fourth Edition

1. adj. Affected or characterized by sorrow or unhappiness.
2. adj. Expressive of sorrow or unhappiness.
3. adj. Causing sorrow or gloom; depressing: a sad movie; sad news.
4. adj. Deplorable; sorry: a sad state of affairs; a sad excuse.
5. adj. Dark-hued; somber.

Century Dictionary and Cyclopedia

1. Full; having had one's fill; sated; surfeited; hence, satiated; wearied; tired; sick.
2. Heavy; weighty; ponderous.
3. Firm; solid; fixed.
4. Close; compact; hard; stiff; not light or soft.
5. Heavy; soggy; doughy; that has not risen well: as, sad bread.
6. Weighty; important; momentous.
7. Strong; stout: said of a person or an animal.
8. Settled; fixed; resolute.
9. Steadfast; constant; trusty; faithful.
10. Sober; serious; grave; sedate; discreet; responsible; wise; sage.
11. Sorrowful; melancholy; mournful; dejected.
12. Expressing or marked by sorrow or melancholy.
13. Having the external appearance of sorrow; gloomy; downcast: as, a sad countenance.
14. Distressing; grievous; disastrous: as, a sad accident; a sad disappointment.
15. Troublesome; trying; bad; wicked: sometimes used jocularly: as, a sad grumbler; a sad rogue.
16. Dark; somber; sober; quiet: applied to color: as, a sad brown.
17. = Syn. 11 and
18. Depressed, cheerless, desponding, disconsolate.
19. Dire, deplorable.
20. To make firm.
21. To strengthen; establish; confirm.
22. To sadden; make sorrowful; grieve.
23. Strongly; stiffly.
24. Soberly; prudently; discreetly.
25. Closely; firmly: as, to lie sad.

Wiktionary

1. adj. obsolete Sated, having had one's fill; satisfied, weary.
2. adj. obsolete Steadfast, valiant.
3. adj. obsolete Dignified, serious, grave.
4. adj. Of colours: dark, deep; later, sombre, dull.
5. adj. Feeling sorrow; sorrowful, mournful.
6. adj. Appearing sorrowful.
7. adj. Causing sorrow; lamentable.
8. adj. Poor in quality, bad; shameful, deplorable; later, regrettable, poor.
9. adj. slang Unfashionable; socially inadequate or undesirable.
10. adj. dialect soggy (to refer to pastries).

GNU Webster's 1913

1. adj. obsolete Sated; satisfied; weary; tired.
2. adj. Obs., except in a few phrases; as, sad bread. Heavy; weighty; ponderous; close; hard.
3. adj. Dull; grave; dark; somber; -- said of colors.
4. adj. obsolete Serious; grave; sober; steadfast; not light or frivolous.
5. adj. Affected with grief or unhappiness; cast down with affliction; downcast; gloomy; mournful.
6. adj. Afflictive; calamitous; causing sorrow.
7. adj. colloq. Hence, bad; naughty; troublesome; wicked.
8. v. obsolete To make sorrowful; to sadden.
9. n. Acron. Seasonal affective disorder.

WordNet 3.0

1. adj. bad; unfortunate.
2. adj. of things that make you feel sad
3. adj. experiencing or showing sorrow or unhappiness